in the last episode, Buffy will not die...all sources are pretty adamant about that, which is cool...one of the Scoobies will die to save Andrew's life, and Anya is gonna get whacked, whether or not Anya is the one who dies for Andrew, I don't know. Also there is a lot of talk that Spike is gonna get it

if Angel gets picked up for another season, then Spike goes to Angel, and that the entire cast for Angel will appear in the final Buffy episode.

Anya will die, presumably saving Andrew. And that, as far as I know, is the only Scooby death.

Angel's role will be limited. He'll only show up to give Buffy an amulet, a Wolfram and Hart file on the First Evil, and a kiss. He goes back to LA, just in case Buffy and Co. fail against the FE, and his LA group has to finish the job.

Spike will... it's not really clear. It sounds like he'll go down into the Hellmouth to close it or something, and remain there. Buffy will tell him that he loves her, and he tells her he doesn't believe her and she's only saying because he'll be dead in a few minutes. Whether or not this a "death" is up in the air. It sounds like the kind of "death" he could easily come back from, not unlike Angel at the end of S2.

Read that Willow's hair will turn white, too.

Not sure what becomes of Faith and Wood, but I haven't heard that they die.

Also sounds like Sunnydale will be no more by the end of the episode.

There was some debate on who would die -- Xander or Anya -- but it's now starting to sound like it's Anya who will make an exit.

Apparently Joss Whedon has filmed scenes of several different girls around the world gaining slayer powers all at once. Someone else posted that Willow will do a spell that will embue all of the potentials with Buffy and Faith's powers. Since Willow's spells this season tend to not work exactly as she plans, I really think (based on the above rumors) that at the end of the last episode Willow does something wrong and the slayer power won't be limited to just one girl at a time, but to hundreds if not thousands of girls all at once. That could make it a lot easier for Buffy to retire since the weight isn't solely on her shoulders anymore.

The First Evil appearing to Buffy as Kendra, The Master, Caleb, Glory, Mayor Wilkins, Angel, and herself. That's actually pretty intense, as are the First's appearances as Joyce. Dawn also fits into the overall plot better, and the weakness in the Slayer line is also better explained.